Search Results - "Espinoza, Víctor M."

Glottal Aerodynamic Measures in Women with Phonotraumatic and Nonphonotraumatic Vocal Hyperfunction by Espinoza, Victor M, Zañartu, Matías, Van Stan, Jarrad H, Mehta, Daryush D, Hillman, Robert E

“…Purpose: The purpose of this study was to determine the validity of preliminary reports showing that glottal aerodynamic measures can identify…”
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Glottal Aerodynamics Estimated from Neck-Surface Vibration in Women with Phonotraumatic and Nonphonotraumatic Vocal Hyperfunction by Espinoza, Víctor M, Mehta, Daryush D, Van Stan, Jarrad H, Hillman, Robert E, Zañartu, Matías

“…Purpose: The purpose of this study was to determine whether estimates of glottal aerodynamic measures based on neck-surface vibration are comparable to those…”
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Ambulatory assessment of phonotraumatic vocal hyperfunction using glottal airflow measures estimated from neck-surface acceleration by Cortés, Juan P, Espinoza, Víctor M, Ghassemi, Marzyeh, Mehta, Daryush D, Van Stan, Jarrad H, Hillman, Robert E, Guttag, John V, Zañartu, Matías

“…Phonotraumatic vocal hyperfunction (PVH) is associated with chronic misuse and/or abuse of voice that can result in lesions such as vocal fold nodules. The…”
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The difference between first and second harmonic amplitudes correlates between glottal airflow and neck-surface accelerometer signals during phonation by Mehta, Daryush D., Espinoza, Víctor M., Van Stan, Jarrad H., Zañartu, Matías, Hillman, Robert E.

“…Miniature high-bandwidth accelerometers on the anterior neck surface are used in laboratory and ambulatory settings to obtain vocal function measures. This…”
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Improved Subglottal Pressure Estimation From Neck-Surface Vibration in Healthy Speakers Producing Non-Modal Phonation by Lin, Jon Z., Espinoza, Victor M., Marks, Katherine L., Zanartu, Matias, Mehta, Daryush D.

“…Subglottal air pressure plays a major role in voice production and is a primary factor in controlling voice onset, offset, sound pressure level, glottal…”
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Lombard Effect in Individuals with Nonphonotraumatic Vocal Hyperfunction: Impact on Acoustic, Aerodynamic, and Vocal Fold Vibratory Parameters by Castro, Christian, Prado, Pavel, Espinoza, Víctor M, Testart, Alba, Marfull, Daphne, Manriquez, Rodrigo, Stepp, Cara E, Mehta, Daryush D, Hillman, Robert E, Zañartu, Matías

“…Purpose: This exploratory study aims to investigate variations in voice production in the presence of background noise (Lombard effect) in individuals with…”
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Estimation of Subglottal Pressure, Vocal Fold Collision Pressure, and Intrinsic Laryngeal Muscle Activation From Neck-Surface Vibration Using a Neural Network Framework and a Voice Production Model by Ibarra, Emiro J, Parra, Jesús A, Alzamendi, Gabriel A, Cortés, Juan P, Espinoza, Víctor M, Mehta, Daryush D, Hillman, Robert E, Zañartu, Matías

“…The ambulatory assessment of vocal function can be significantly enhanced by having access to physiologically based features that describe underlying…”
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Spectral features related to the auditory perception of twang-like voices by Saldías O'Hrens, Marcelo, Castro, Christian, Espinoza, Víctor M, Stoney, Justin, Quezada, Camilo, Laukkanen, Anne-Maria

“…To the best of our knowledge, studies on the relationship between spectral energy distribution and the degree of perceived voices are still sparse. Through an…”
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Using Ambulatory Voice Monitoring to Investigate Common Voice Disorders: Research Update by Mehta, Daryush D, Van Stan, Jarrad H, Zañartu, Matías, Ghassemi, Marzyeh, Guttag, John V, Espinoza, Víctor M, Cortés, Juan P, Cheyne, 2nd, Harold A, Hillman, Robert E

“…Many common voice disorders are chronic or recurring conditions that are likely to result from inefficient and/or abusive patterns of vocal behavior, referred…”
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Ambulatory Monitoring of Subglottal Pressure Estimated from Neck-Surface Vibration in Individuals with and without Voice Disorders by Cortés, Juan P, Lin, Jon Z, Marks, Katherine L, Espinoza, Víctor M, Ibarra, Emiro J, Zañartu, Matías, Hillman, Robert E, Mehta, Daryush D

“…The aerodynamic voice assessment of subglottal air pressure can discriminate between speakers with typical voices from patients with voice disorders, with…”
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Kalman Filter Implementation of Subglottal Impedance-Based Inverse Filtering to Estimate Glottal Airflow during Phonation by Cortés, Juan P., Alzamendi, Gabriel A., Weinstein, Alejandro J., Yuz, Juan I., Espinoza, Víctor M., Mehta, Daryush D., Hillman, Robert E., Zañartu, Matías

“…Subglottal Impedance-Based Inverse Filtering (IBIF) allows for the continuous, non-invasive estimation of glottal airflow from a surface accelerometer placed…”
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Estimating Vocal Fold Contact Pressure from Raw Laryngeal High-Speed Videoendoscopy Using a Hertz Contact Model by Díaz-Cádiz, Manuel E., Peterson, Sean D., Galindo, Gabriel E., Espinoza, Víctor M., Motie-Shirazi, Mohsen, Erath, Byron D., Zañartu, Matías

“…The development of trauma-induced lesions of the vocal folds (VFs) has been linked to a high collision pressure on the VF surface. However, there are no direct…”
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Vocal Fold Dissipated Power in Females with Hyperfunctional Voice Disorders by Ghasemzadeh, Hamzeh, Hillman, Robert E., Espinoza, Víctor M., Erath, Byron D., Mehta, Daryush D.

“…Phonotrauma has been hypothesized to be associated with prolonged and/or accumulated biomechanical stress on vocal fold tissue. This hypothesis can be tested…”
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Caracterización electroacústica y térmica de un altavoz dinámico de bobina móvil de tipo overhung by Quinteros, Nicolás F, Espinoza, Víctor M

“…Los altavoces dinámicos de tipo bobina móvil son los más utilizados en aplicaciones de audio profesional. Sin embargo, en la literatura, su comportamiento…”
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Mechanistic Investigation of the Formation of Isoindole N‑Oxides in the Electron Transfer-Mediated Oxidative Cyclization of 2′-Alkynylacetophenone Oximes by Kim, Wan Shin, Espinoza Castro, Victor M, Abiad, Amanda, Ko, Michael, Council, Ashley, Nguyen, Anh, Marsalla, Laura, Lee, Vicky, Tran, Thao, Petit, Andrew S, de Lijser, H. J. Peter

“…This paper describes a joint experiment–theory investigation of the formation and cyclization of 2′-alkynylacetophenone oxime radical cations using…”
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Caracterización electroacústica y térmica de un altavoz dinámico de bobina móvil de tipo overhung by Quinteros, Nicolás F., Espinoza, Víctor M.

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Nonspherical anion sequestration by C-H hydrogen bonding by Mirzaei, Saber, Espinoza Castro, Victor M, Hernández Sánchez, Raúl

“…Macrocyclic arenes laid the foundations of supramolecular chemistry and their study established the fundamentals of noncovalent interactions. Advancing their…”
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Análisis electroacústico y térmico de un altavoz de bobina-móvil de tipo overhung a través de LTspice by Quinteros, Nicolás F, Espinoza, Víctor M

“…En esta investigación se presenta una extensión del trabajo de altavoces en SPICE realizado por Leach, para un altavoz dinámico de bobina móvil de tipo…”
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Análisis electroacústico y térmico de un altavoz de bobina-móvil de tipo overhung a través de SPICE by Quinteros, Nicolás F, Espinoza, Víctor M

“…This research presents an extension of the SPICE loudspeaker work done by Leach for a measured and simulated overhung-type moving-coil dynamic loudspeaker. In…”
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Uncertainty of glottal airflow estimation during continuous speech using impedance-based inverse filtering of the neck-surface acceleration signal by Espinoza, Victor M., Mehta, Daryush, Van Stan, Jarrad, Hillman, Robert E., Zañartu, Matías

“…The aim of this work is to determine the uncertainty of non-invasive glottal aerodynamic measures that are obtained using subglottal impedance-based inverse…”
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